{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DeriveGeneric      #-}
{-# LANGUAGE OverloadedStrings  #-}
{-# LANGUAGE RecordWildCards    #-}
{-# LANGUAGE TypeFamilies       #-}

{-# OPTIONS_GHC -fno-warn-unused-imports #-}
{-# OPTIONS_GHC -fno-warn-unused-binds   #-}
{-# OPTIONS_GHC -fno-warn-unused-matches #-}

-- Derived from AWS service descriptions, licensed under Apache 2.0.

-- |
-- Module      : Network.AWS.Kinesis.DecreaseStreamRetentionPeriod
-- Copyright   : (c) 2013-2016 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay <brendan.g.hay@gmail.com>
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Decreases the Amazon Kinesis stream\'s retention period, which is the
-- length of time data records are accessible after they are added to the
-- stream. The minimum value of a stream\'s retention period is 24 hours.
--
-- This operation may result in lost data. For example, if the stream\'s
-- retention period is 48 hours and is decreased to 24 hours, any data
-- already in the stream that is older than 24 hours is inaccessible.
module Network.AWS.Kinesis.DecreaseStreamRetentionPeriod
    (
    -- * Creating a Request
      decreaseStreamRetentionPeriod
    , DecreaseStreamRetentionPeriod
    -- * Request Lenses
    , dsrpStreamName
    , dsrpRetentionPeriodHours

    -- * Destructuring the Response
    , decreaseStreamRetentionPeriodResponse
    , DecreaseStreamRetentionPeriodResponse
    ) where

import           Network.AWS.Kinesis.Types
import           Network.AWS.Kinesis.Types.Product
import           Network.AWS.Lens
import           Network.AWS.Prelude
import           Network.AWS.Request
import           Network.AWS.Response

-- | Represents the input for < DecreaseStreamRetentionPeriod>.
--
-- /See:/ 'decreaseStreamRetentionPeriod' smart constructor.
data DecreaseStreamRetentionPeriod = DecreaseStreamRetentionPeriod'
    { _dsrpStreamName           :: !Text
    , _dsrpRetentionPeriodHours :: !Nat
    } deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DecreaseStreamRetentionPeriod' with the minimum fields required to make a request.
--
-- Use one of the following lenses to modify other fields as desired:
--
-- * 'dsrpStreamName'
--
-- * 'dsrpRetentionPeriodHours'
decreaseStreamRetentionPeriod
    :: Text -- ^ 'dsrpStreamName'
    -> Natural -- ^ 'dsrpRetentionPeriodHours'
    -> DecreaseStreamRetentionPeriod
decreaseStreamRetentionPeriod pStreamName_ pRetentionPeriodHours_ =
    DecreaseStreamRetentionPeriod'
    { _dsrpStreamName = pStreamName_
    , _dsrpRetentionPeriodHours = _Nat # pRetentionPeriodHours_
    }

-- | The name of the stream to modify.
dsrpStreamName :: Lens' DecreaseStreamRetentionPeriod Text
dsrpStreamName = lens _dsrpStreamName (\ s a -> s{_dsrpStreamName = a});

-- | The new retention period of the stream, in hours. Must be less than the
-- current retention period.
dsrpRetentionPeriodHours :: Lens' DecreaseStreamRetentionPeriod Natural
dsrpRetentionPeriodHours = lens _dsrpRetentionPeriodHours (\ s a -> s{_dsrpRetentionPeriodHours = a}) . _Nat;

instance AWSRequest DecreaseStreamRetentionPeriod
         where
        type Rs DecreaseStreamRetentionPeriod =
             DecreaseStreamRetentionPeriodResponse
        request = postJSON kinesis
        response
          = receiveNull DecreaseStreamRetentionPeriodResponse'

instance Hashable DecreaseStreamRetentionPeriod

instance NFData DecreaseStreamRetentionPeriod

instance ToHeaders DecreaseStreamRetentionPeriod
         where
        toHeaders
          = const
              (mconcat
                 ["X-Amz-Target" =#
                    ("Kinesis_20131202.DecreaseStreamRetentionPeriod" ::
                       ByteString),
                  "Content-Type" =#
                    ("application/x-amz-json-1.1" :: ByteString)])

instance ToJSON DecreaseStreamRetentionPeriod where
        toJSON DecreaseStreamRetentionPeriod'{..}
          = object
              (catMaybes
                 [Just ("StreamName" .= _dsrpStreamName),
                  Just
                    ("RetentionPeriodHours" .=
                       _dsrpRetentionPeriodHours)])

instance ToPath DecreaseStreamRetentionPeriod where
        toPath = const "/"

instance ToQuery DecreaseStreamRetentionPeriod where
        toQuery = const mempty

-- | /See:/ 'decreaseStreamRetentionPeriodResponse' smart constructor.
data DecreaseStreamRetentionPeriodResponse =
    DecreaseStreamRetentionPeriodResponse'
    deriving (Eq,Read,Show,Data,Typeable,Generic)

-- | Creates a value of 'DecreaseStreamRetentionPeriodResponse' with the minimum fields required to make a request.
--
decreaseStreamRetentionPeriodResponse
    :: DecreaseStreamRetentionPeriodResponse
decreaseStreamRetentionPeriodResponse = DecreaseStreamRetentionPeriodResponse'

instance NFData DecreaseStreamRetentionPeriodResponse